This is has been stated multiple times: these are pre-production prototypes. The exhaust hadn't been finalized.

Having looked at the undershot photographs I hope you are right. I once had a Honda Civic (1990 Model) and this looks rather reminiscent of what was fitted as standard to what is now a 21year old car. I dont like Halfords style tail pipe covers either and this looks dangerously like those from the underneath shots. I would expect on a Turbo car stainless steel pipes all the way!